Abstract: There is provided an output data switching apparatus for remarkably alleviating user's uncomfortable feeling caused by an output data switching. The output data switching apparatus, as an output data switching apparatus 20 for switching an output of an output data made of at least one of a sound component and a video component from a first output data being output to a second output data, includes relevant information outputting elements (82 to 84, 87 to S9, 86) for outputting relevant information associated with the second output data together with the first output data being output based on an output form of the first output data and an output form of the second data, and switching element S5 for switching the output from the first output data to the second output data after the relevant information is output.

Abstract: A noise removal apparatus is provided for removing noise from frames of digital audio data. The apparatus comprises an error detector and a decoder. The error detector detects whether or not there occurs an error in a coded audio data composed of the digital audio data. The decoder decodes the coded audio data, in which a window function is applied to the coded audio data, and results coming from the application of the window function to different coded audio data are mutually added. The coded audio data to be decoded is error-free coded audio data inputted immediately before the occurrence of the error when the error detector detects that there occurs the error in the coded data.